20240729 Finished
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@ -187,4 +187,5 @@ mod p67_add_binary;
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mod p190_reverse_bits;
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mod p191_number_of_1_bits;
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mod p136_single_number;
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mod p137_single_number_ii;
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mod p137_single_number_ii;
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mod p201_bitwise_and_of_numbers_range;
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32
src/problem/p201_bitwise_and_of_numbers_range.rs
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src/problem/p201_bitwise_and_of_numbers_range.rs
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@ -0,0 +1,32 @@
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/**
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* [201] Bitwise AND of Numbers Range
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*/
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pub struct Solution {}
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// submission codes start here
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impl Solution {
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pub fn range_bitwise_and(left: i32, right: i32) -> i32 {
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let mut right = right;
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while left < right {
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right = right & (right - 1);
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}
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right
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}
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}
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// submission codes end
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_201() {
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assert_eq!(4, Solution::range_bitwise_and(5, 7));
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assert_eq!(0, Solution::range_bitwise_and(0, 0));
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}
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}
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